TA station integration with AEC... Has it made a difference? Helena Buurman UAF/AEC TA team meeting, November 2015
Seismicity in Alaska Sep Sep ,972 earthquakes located Sep Sep ,904 earthquakes located “Pre-TA” “Syn-TA”
Earthquake rates in Alaska Rat Islands 7.9 Mysterious increase
Seismometers in Alaska
Have the TA stations made a difference?
Picks made by AEC analysts
TA stations used by AEC analysts
10,614
Pre-TA station distribution
September 2015 station distribution
New TA stations in Alaska
How do the new stations impact what is located at AEC?
How do the new stations impact what is located by AEC?
Can we see a difference in the AEC earthquake catalogue? # events Magnitude
Can we see a difference in the AEC earthquake catalogue? # events 8% 38% Magnitude
Can we see a difference in the AEC earthquake catalogue? % events below mag. 1
Are more earthquakes being located around new TA stations? H23K M26K M19K
Are there changes around the existing AEC stations? GRIN TRF HOM
Improved noise levels at AEC upgrade sites September 2015 September 2014
September 2015September 2014
6 upgrades in 2016
TRF PIN KAI
6 upgrades in 2016 TRF PIN KAI